Paint/Primer qq

Trying to finish my Satoshi project.

Need to wet sand and then I'm ready to paint. Plan to have the chrome surround professionally painted to match.

Gonna try to do the black interior myself.

My research tells me I need to wet sand between coats and clean after each sanding with denatured alcohol or mineral spirits.

That makes sense to me but I'm having trouble with the paint. I've read about better results using a primer with an adhesion promoter and a thicker filler/primer. It doesn't appear that both of these things exist in one product.

If anyone can advise me on the best prep/prime/paint plan (say that 3 times fast) I'd be appreciative.

Thanks

TL